Finding the Fourth Proportional to 412,072.19, 618,124.74 and 127,792.26
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Solution
The fourth proportional to 412,072.19, 618,124.74 and 127,792.26 is: 191,693.49
Step by Step Solution
- Step 1: Write the proportion equation
412,072.19 : 618,124.74 = 127,792.26 : x - Step 2: Convert to fraction form
412,072.19/618,124.74 = 127,792.26/x - Step 3: Cross multiply
412,072.19x = 618,124.74 × 127,792.26 - Step 4: Simplify right side
412,072.19x = 78,991,557,486.51 - Step 5: Solve for x
x = 78,991,557,486.51/412,072.19 - Step 6: Final answer
x = 191,693.49
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.